/**********************************************************************
 *
 * GEOS - Geometry Engine Open Source
 * http://geos.osgeo.org
 *
 * Copyright (C) 2001-2002 Vivid Solutions Inc.
 *
 * This is free software; you can redistribute and/or modify it under
 * the terms of the GNU Lesser General Public Licence as published
 * by the Free Software Foundation.
 * See the COPYING file for more information.
 *
 **********************************************************************
 *
 * Last port: operation/valid/RepeatedPointTester.java rev. 1.8 (JTS-1.10)
 *
 **********************************************************************/

#include <geos/operation/valid/RepeatedPointTester.h>
#include <geos/util/UnsupportedOperationException.h>
#include <geos/geom/CoordinateSequence.h>
#include <geos/geom/Geometry.h>
#include <geos/geom/Point.h>
#include <geos/geom/LineString.h>
#include <geos/geom/LinearRing.h>
#include <geos/geom/Polygon.h>
#include <geos/geom/MultiPoint.h>
#include <geos/geom/MultiPolygon.h>
#include <geos/geom/MultiLineString.h>
#include <geos/geom/GeometryCollection.h>

#include <typeinfo>

using namespace geos::geom;

namespace geos {
namespace operation { // geos.operation
namespace valid { // geos.operation.valid

Coordinate&
RepeatedPointTester::getCoordinate()
{
    return repeatedCoord;
}

bool
RepeatedPointTester::hasRepeatedPoint(const Geometry* g)
{
    if(g->isEmpty()) {
        return false;
    }

    if(dynamic_cast<const Point*>(g)) {
        return false;
    }
    if(dynamic_cast<const MultiPoint*>(g)) {
        return false;
    }

    // LineString also handles LinearRings
    if(const LineString* x = dynamic_cast<const LineString*>(g)) {
        return hasRepeatedPoint(x->getCoordinatesRO());
    }

    if(const Polygon* x = dynamic_cast<const Polygon*>(g)) {
        return hasRepeatedPoint(x);
    }

    if(const MultiPolygon* x = dynamic_cast<const MultiPolygon*>(g)) {
        return hasRepeatedPoint(x);
    }

    if(const MultiLineString* x = dynamic_cast<const MultiLineString*>(g)) {
        return hasRepeatedPoint(x);
    }

    if(const GeometryCollection* x = dynamic_cast<const GeometryCollection*>(g)) {
        return hasRepeatedPoint(x);
    }

    throw util::UnsupportedOperationException(typeid(*g).name());
}

bool
RepeatedPointTester::hasRepeatedPoint(const CoordinateSequence* coord)
{
    auto npts = coord->getSize();
    for(std::size_t i = 1; i < npts; ++i) {
        if(coord->getAt(i - 1) == coord->getAt(i)) {
            repeatedCoord = coord->getAt(i);
            return true;
        }
    }
    return false;
}

bool
RepeatedPointTester::hasRepeatedPoint(const Polygon* p)
{
    if(hasRepeatedPoint(p->getExteriorRing()->getCoordinatesRO())) {
        return true;
    }

    for(std::size_t i = 0, n = p->getNumInteriorRing(); i < n; ++i) {
        if(hasRepeatedPoint(p->getInteriorRingN(i)->getCoordinatesRO())) {
            return true;
        }
    }
    return false;
}

bool
RepeatedPointTester::hasRepeatedPoint(const GeometryCollection* gc)
{
    for(std::size_t i = 0, n = gc->getNumGeometries(); i < n; ++i) {
        const Geometry* g = gc->getGeometryN(i);
        if(hasRepeatedPoint(g)) {
            return true;
        }
    }
    return false;
}

bool
RepeatedPointTester::hasRepeatedPoint(const MultiPolygon* gc)
{
    for(std::size_t i = 0, n = gc->getNumGeometries(); i < n; ++i) {
        const Polygon* g = gc->getGeometryN(i);
        if(hasRepeatedPoint(g)) {
            return true;
        }
    }
    return false;
}

bool
RepeatedPointTester::hasRepeatedPoint(const MultiLineString* gc)
{
    for(std::size_t i = 0, n = gc->getNumGeometries(); i < n; ++i) {
        const LineString* g = gc->getGeometryN(i);
        if(hasRepeatedPoint(g)) {
            return true;
        }
    }
    return false;
}

} // namespace geos.operation.valid
} // namespace geos.operation
} // namespace geos

